CN202076940U - Medium voltage converter - Google Patents
Medium voltage converter Download PDFInfo
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- CN202076940U CN202076940U CN2010206291845U CN201020629184U CN202076940U CN 202076940 U CN202076940 U CN 202076940U CN 2010206291845 U CN2010206291845 U CN 2010206291845U CN 201020629184 U CN201020629184 U CN 201020629184U CN 202076940 U CN202076940 U CN 202076940U
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- pressure converter
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Abstract
The utility model provides a voltage converter (10) which comprises a rectifier segment (12), an inverter segment (14), a cooling segment (18) and a housing (38) used for accommodating the rectifier segment (12), the inverter segment (14) and the cooling segment (18).
Description
Technical field
The utility model relates to the high power field of drivers.Specifically, the utility model relates to electric pressure converter.
Background technology
Usually, provide the present speed of adaptation driver and the voltage of load by electric pressure converter for each high power driver.The electric pressure converter handle becomes through adjusting the phase place of voltage from the phase transition of the voltage of power network.This can carry out by dc voltage in the middle of the voltage commutation from power network is become and by another voltage that dc voltage is converted to different frequency.
These tasks can be carried out by the power semiconductor that can need Be Controlled and cooling.In this mode, electric pressure converter comprises may need to be installed near a large amount of parts of driver.In addition, all parts of electric pressure converter may be safeguarded in the mode of the operating time of drives interrupts device as few as possible.
The utility model content
A purpose of the present utility model provides a kind of electric pressure converter of installing and being easy to safeguard of being easy to.
This purpose realizes by the theme of independent claims.By dependent claims, other example embodiment is conspicuous.
According to an embodiment of the present utility model, electric pressure converter is fit to the AC voltage transitions from power network is become the 2nd AC voltage, and the 2nd AC voltage for example can offer drivers such as motor.Specifically, electric pressure converter can be middle pressure converter, and driver can be middle pressure driver.
According to an embodiment of the present utility model, electric pressure converter comprises the rectifier section that is used for an AC voltage transitions is become dc voltage.Usually, first voltage has three phase places, and they are rectified into a dc voltage, and this dc voltage is provided to the DC link (DC link) of electric pressure converter.Specifically, first voltage (from the voltage of electrical network) can offer the transformer with two or four secondary winding, and these secondary winding are connected with rectifier.Transformer can be used as current potential and separates, and may need for the adaptive of voltage.
The rectifier section can comprise and be used for first voltage is carried out rectification, has for example semi-conductive rectifier of diode constant power.The rectifier section can comprise the casing of the parts that hold rectifier, and it can have (hinged) door of the parts (for example being used to safeguard rectifier) that are used near the rectifier section.
According to an embodiment of the present utility model, electric pressure converter comprises the inverter section that is used for dc voltage is converted to the 2nd AC voltage.Second voltage can have the frequency different with first voltage.The inverter section can comprise that the dc voltage that is used for from the DC link is transformed into the 2nd AC voltage, has for example semi-conductive inverter of IGCT constant power.In addition, the inverter section can comprise the casing of the parts that hold inverter, and it can have (hinged) door that is used near the parts of inverter section.
According to an embodiment of the present utility model, the inverter in rectifier in the rectifier section and the inverter section is electrically connected by the DC link.For protection system, fast-switching arrangement (for example comprise power semiconductor, as IGCT) can be arranged between rectifier and the DC link.Fast-switching arrangement can be born the effect of conventional fuse.In this way, can avoid using the fuse that possibility is unreliable and may must usually change.
According to an embodiment of the present utility model, electric pressure converter comprises and is used to cool off the cooling section of rectifier section and inverter section at least.In operation, the power semiconductor of rectifier section and inverter section produces the thermal loss that must be transported away from power semiconductor.This can be undertaken by cooling circuit, heat exchanger, fan, pump and other possible parts of cooling section.
According to an embodiment of the present utility model, electric pressure converter comprises the housing (for example casing) that is used to hold rectifier section, inverter section and cooling section.The casing that holds rectifier section, inverter section and cooling section can be the part of the housing of electric pressure converter.Electric pressure converter with a mono-hull can be easy to transportation and installation.
According to an embodiment of the present utility model, housing is the delivery unit that is used for electric pressure converter.
According to an embodiment of the present utility model, housing has with the section separation of different voltage levvls, as the interior distance piece (as partition wall) with rectifier section and the separation of inverter section.
According to an embodiment of the present utility model, electric pressure converter comprises control section, wherein have be used to control electric pressure converter, be the controller of rectifier section, inverter section and cooling section.In addition, driver can be by control section, for example control by DTC (direct torque control).Control section also can be contained in the housing of electric pressure converter, for example in additional casing.In order to carry out control task, control section can comprise one or more electron plates that can insert control section.
According to an embodiment of the present utility model, electric pressure converter comprises the transforming section (transforming section) that is used for lower or higher AC voltage transformation is become an AC voltage.Can be transformed into the input voltage of rectifier section by transformer from the lower or higher voltage of power network.Transformer can be contained in the housing of electric pressure converter.
According to an embodiment of the present utility model, cooling section comprises the fan that is used to produce gas (air) stream that cools off rectifier section and inverter section at least.Can at first pass through the inverter section by the gas stream that fan produced, secondly through passing through fan, and the 3rd process rectifier.In this way, the semiconductor that can produce the inverter of most of heat at first cools off by the coldest air.The air that is used to cool off can enter the casing of inverter, or through inverter, then through passing through fan.After fan, air stream can be divided into parallel air flue, and one leads to rectifier, and one lead to filter inductor (filter inductor).After this, air can drawn housing or casing through in the optional common-mode inductor.
According to an embodiment of the present utility model, fan is positioned at enclosure interior, for example between the parts of the parts of inverter section and rectifier section, is used to reduce noise.Specifically, fan can be arranged between inverter and the rectifier.
According to an embodiment of the present utility model, electric pressure converter (being the inverter section specifically) comprises the air intake of (air) filter that has gas, and filter is adapted at electric pressure converter to be changed from the electric pressure converter outside when operating.Air intake can be positioned on the door of inverter section, and for example it can be (rectangle) opening on the door.The part of door can be the lid of air cleaner.Lid can be removed from door, and air cleaner can take out from opening, and new air cleaner can be put into opening.After this, lid can be put on the door once more.All these steps can be carried out when transducer is operated.
According to an embodiment of the present utility model, inverter comprises the switch element (switching unit) that is used for be transformed into the 2nd AC voltage from the dc voltage of DC link.Switch element can be positioned at the air intake back, makes that the power semiconductor of switch element is the maximum parts of being cooled of electric pressure converter.
According to an embodiment of the present utility model, cooling section comprises gas cooled loop and liquid cooling loops.The gas cooled loop can be fit to adopt gas, particularly air to cool off the parts of electric pressure converter.Liquid cooling loops can be fit to adopt liquid, for example water to cool off the parts of electric pressure converter.Specifically, the power semiconductor of inverter and/or rectifier can adopt liquid, for example water to cool off.The other parts that need not the electric pressure converter of too many cooling can adopt gas, cool off as surrounding air.Liquid cooling loops can comprise the closed liquid cooling circuit.Cooling section can comprise the heat exchanger that is used for heat-shift between gas cooled loop and liquid cooling loops.Cooling section can comprise the heat exchanger that is used for heat-shift between liquid cooling loops and (for example client of working voltage transducer) external cooling circuit.Come the refrigerating gas of automatic heat-exchanger to can be used for cooling off the parts that do not have by the electric pressure converter of liquid cooling loops (directly) cooling.
According to an embodiment of the present utility model, the inverter section comprises a plurality of switch elements.Switch element can comprise the semiconductor switch that is used for dc voltage is transformed into the 2nd AC voltage.Switch element can be electrically connected to the low inductance busbar at the back side that is positioned at electric pressure converter (opposite with the door of the casing of inverter section) and arrange (bus bar arrangement).Switch element can be used as vertically inverter and piles up and install, and the inverter that perhaps can be used as along continuous straight runs piles up to be installed.Inverter piles up and can be installed in the framework, and can be connected to low inductance busbar layout.Inverter piles up and can have a public clamp circuit that is used for its positive and negative half period (half).
According to an embodiment of the present utility model, rectifier section and/or inverter section comprise door, and electric pressure converter comprises earthed switch, and it and a door mechanical interlock make earthed switch closure when door is opened.For example, door only just can be opened when earthed switch is closed.In addition, earthed switch only just can disconnect when door is closed.Earthed switch can with comprise power electronic device the section the cabinet door mechanical interlock.
According to an embodiment of the present utility model, electric pressure converter comprises input isolating switch (being used for the input and the power supply network of electric pressure converter are disconnected).The input isolating switch can be with earthed switch, for example be used for the earthed switch combination of transformer primary side and DC link.For example, the input isolating switch can be connected with earthed switch machinery (rigidity), makes earthed switch and input isolating switch just jointly movably.
By the explanation that reference the following stated embodiment carries out, these aspects of the present utility model and other aspect will be very obvious.
Description of drawings
Hereinafter illustrate in greater detail the utility model theme with reference to the example embodiment shown in the accompanying drawing.
Fig. 1 schematically illustrates the section according to the electric pressure converter of an embodiment of the present utility model.
Fig. 2 illustrates the front view according to the electric pressure converter of an embodiment of the present utility model.
Fig. 3 and Fig. 4 illustrate the three-dimensional view of the electric pressure converter of Fig. 2.
Fig. 5 schematically illustrates according to an embodiment of the present utility model, the air stream of electric pressure converter by Fig. 2 to Fig. 4.
Fig. 6 and Fig. 8 illustrate the different front views according to the electric pressure converter of another embodiment of the present utility model.
Fig. 7 illustrates the three-dimensional view of the electric pressure converter of Fig. 6.
Fig. 9 schematically illustrates according to an embodiment of the present utility model, the air stream of electric pressure converter by Fig. 6 to Fig. 8.
Figure 10 illustrates the front view according to the electric pressure converter of another embodiment of the present utility model.
Figure 11 and Figure 12 illustrate the three-dimensional view of the electric pressure converter of Figure 10.
Figure 13 to Figure 16 schematically illustrates the cooling circuit according to an embodiment of the present utility model.
Figure 17 illustrates the three-dimensional view according to the optional additional casing of other embodiment of the present utility model.
Figure 18 illustrates the front view of the optional additional casing of Figure 17.
Figure 19 and Figure 20 illustrate the three-dimensional view of the optional additional casing of Figure 17.
Figure 21 schematically illustrates according to another embodiment of the present utility model, electric pressure converter with no fuse design.
Figure 22 and Figure 23 illustrate the controller according to the electric pressure converter of another embodiment of the present utility model.
In principle, in the accompanying drawing, identical part provides identical reference number.
Embodiment
Fig. 1 schematically illustrates the section one by one of electric pressure converter 10.For example, electric pressure converter can be series A CS 1000W, the ACS 1000A of ABB or ACS 1000i one of them.
In the operating period of electric pressure converter 10, the operation of other parts of the control of the controller of control section 16 inside rectifier 12, inverter 14 and electric pressure converter 10.Other parts of the power semiconductor of input transformer 29 (only ACS 1000i) and rectifier 30 and inverter 32 inside and electric pressure converter 10 produce heat, and are cooled off by cooling section 18.For example, the semiconductor of rectifier 30 can be a diode, and rectifier 12 can be diode rectifier, and the semiconductor of inverter 32 can be IGCT and diode, and inverter 32 can be IGCT inverter or diode transducer.
Different ABB electric pressure converters are followed above-mentioned notion.Basic ACS1000 transducer 38 sections of comprising and parts 12,14,16,18,34 and 36.The ACS1000i transducer also comprises parts 26 and 28.ACS 1000i also can comprise input switch (shown between 22 among Fig. 1 and 26).Input switch then is positioned between input isolating switch 26 and the transformer 29.In principle, there are three driver series, that is, have the ACS 1000A of air cooling 18, the ACS 1000W that has the ACS1000i of integrated input transformer 29 and air cooling 18 and have water-cooled 18 based on this design.
Each member 10 of ACS 1000 series be designed to require the standard industry converter configurations minimum quantities product and adopt 12 pulses and 24 pulse versions are obtainable.Therefore, transducer 10 can use accepted standard parts, Software tool and design principle in the low-voltage ACS scope.
Fig. 2 illustrates the 3-D view of air cooling ACS 1000A transducer 10.In general, transducer shown in the drawings comprises housing 38, and it can design as casing 38, wherein has following basic mechanical structure: the wall of housing 38 or panel 40 mainly comprise riveted joint and folded sheet metal.The Qianmen 42,44,46,48 that is connected through the hinge can be near the inside of housing 38.The plate thickness of panel and door can be 2mm.Housing 38 has the interior distance piece of the section of separating different voltage levvls.Install in order to be easy to transportation and to be easy to, housing or casing 38 are delivery units.In addition, transducer 10 can have scaffold, and it for example is the shell of ACS 1000i transducer.
The Qianmen 48 of inverter section 14 has air intake 62.Inverter in the section 14 piles up 58 because air cooled transducer 10 adopts, output filter 60 and DC link. capacitor design, and this section 14 is positioned at air intake 62 back, so this is favourable for the responsive to temperature capacitor.Inverter piles up the instrument that 58 structure allows to be easy to the particular design of the part by can be used as power supply and changes semiconductor (IGCT and diode).Three inverters pile up 58 vertically to be installed with the low inductance busbar at the back side, and has a public clamp circuit for the positive and negative half period.
Fig. 3 and Fig. 4 illustrate other view of the transducer 12 of Fig. 2.Among Fig. 3, illustrate transducer housing 38 tops the air output cassette or cover 67.Among Fig. 4, door 42 is removed, and the control electronic device 70 in swing frame 68 and the swing frame 68 is visible.The optional box 67 of redundant cooling fan also is visible.
In Fig. 5, schematically illustrate air stream by transducer 10.Air enters housing or casing 38 by the air intake 62 of transducer door 48, and passes through inverter section 14 and have inverter and pile up 58 inverter 32.After this, air passes through fan 54, and is divided into two air flues.An air flue is through having the rectifier 30 of rectifier stack 55.Another air flue is through having the sinusoidal filter 36 of sinusoidal filter inductor 56.Then, these air flues are integrated, and air is drawn casing 38, leave transducer 10 through optional common-mode inductor and by air output cassette 67.
Fig. 6 to Fig. 8 illustrates another air cooling electric pressure converter 10a with integrated input transformer 29, as ACS 1000i.The section 72 in transducer 10 left sides is held section and the input isolating switch that power cable connects, supplies top and bottom to enter.
Among Fig. 7, the front panel 44 and the door 42,44,48 of section 72 are removed.The power cable that enters from top and bottom be connected 74 and the input isolating switch 76 be visible.In the back of swing frame 68,24 pulse input transformers 29 are visible.
Fig. 9 illustrates the air stream by transducer 10a.First circulation of air is crossed air intake 62a and is entered rectifier section 12, passes through rectifier section 12, and leaves the top of transducer 10a by fan 54a.Second circulation of air is crossed air intake 62b and is entered transformer section 20, passes through transformer section 20, and leaves the top of transducer 10a by fan 54b.Second circulation of air is crossed air intake 62 and is entered inverter section 14, passes through inverter section 14, and leaves the top of transducer 10a by fan 54b.
Figure 10 to Figure 11 illustrates water cooling electric pressure converter 10b, as ACS 1000W.
The layout of the control section 16 of transducer 10b is identical with the control section of transducer 10.Control electronic device 70 is installed on the swing frame 68.Control section 16 has the power cable linkage section for entering from top and bottom in control electronic device back and coming out.Local control terminal and button are positioned on the Qianmen of control section 16.
Filter and DC member segments 80 comprise earthed switch, smoothing choke and filtering capacitor, and DC link. capacitor, gating unit provide at the top, and optional public choke provides in the bottom.
The inverter that the converter fragments 82 that comprises the rectifier section 12 of the inverter section 14 at top and bottom is held the top pile up 58 and the protection IGCT of bottom pile up and rectifier stack 55.The IGCT inverter piles up 58, protection IGCT piles up with rectifier stack and is positioned on the swing frame 84, and is approaching to be convenient to.These levels of piling up are installed in the framework 84, and are connected to low inductance busbar layout.As air cooling transducer 10,10a, the structure that inverter piles up allows to be easy to change IGCT and diode.
Figure 12 illustrates the transducer 10b with another casing 92.The cabinet layouts of the water cooling 24 pulse versions of transducer 10b is identical with 12 pulse versions, but difference is to have additional casing 92.Additional casing 92 is positioned at the left side of control section 16, and comprises and be used for 24 pulse manipulated extra rectifier stacks.
To shown in Figure 16, the cooling system 90 of transducer 10b comprises two cooling circuits as Figure 13,, is used to the air cooling loop 94b that adopts water to remove the water cooling loop 94a of power loss 96a and be used to adopt air removal power loss 96b that is.Figure 13 is different aspect the layout of water cooling unit 86 to cooling system shown in Figure 16.
In the embodiment of Figure 13, water/water heat exchanger 102 and air/water heat exchanger 104 are in casing 38 inside of electric pressure converter 10.From client's side, promptly be provided to the heat exchanger 102,104 by filter, and pass back to water source 114 from electric pressure converter 10 outsides from water source, source (raw water supply) 114 cooling water.The water yield of heat exchanger 102,104 of flowing through can be by being regulated by the valve 98 of electric motor starting.Valve 98, pump 100 and 100a, fan 54 and 54 can be controlled by the controller of cooling unit 86, the part of for example controller 70, and this controller also can receive the measured value from measurement mechanism 110a, 110b, 110c.
In heat exchanger 102 inside, the water of closed cooling circuit 94a is cooled.Water among the cooling circuit 94a is by pump 100a, 100b pumping.The pressure of the water of cooling circuit inside and amount can be regulated by open or closed expansion tank 100a.Cooling circuit 94a also comprises conductivity of heat (conductivity), the analog sensor 112a of pressure and temperature and the digital sensor 112c that is used for the water level of measure case 100a of the water that is used for measuring cooling circuit 94a inside.
In heat exchanger 104 inside, the air of closed cooling circuit 94b is cooled.Cooling circuit 94b is closed, and promptly the meaning is, does not almost have to exchange from the air of electric pressure converter 10 air outside and electric pressure converter 10 inside.Make the air circulation of cooling circuit 94b by fan 54,54a.
The difference of the embodiment of Figure 14 and the embodiment of Figure 13 is that heat exchanger 102 is in the outside of casing 38, and air/water heat exchanger 104 is in the inside of casing 38.Heat exchanger 104 can be water/water heat exchanger or the fin cooler or the fan cooler (that is water/air heat exchanger) of client's side.Heater 106 can be necessary to may be lower than 5 ℃ water heating from client's side, between standby period.The pressure of the water of cooling circuit 94a inside and amount can be regulated by (closed-system) expansion tank 100b and analog pressure sensor 112b.
In the embodiment of Figure 15 of the embodiment that corresponds respectively to Figure 13 and Figure 14 and Figure 16, cooling circuit 94a be not with the open cooling circuit of cooling circuit interconnection.(opening) air cooling loop 94b is dissipated to casing 38 ambient airs with power loss 96b.In the embodiment of Figure 15, water/water heat exchanger 102 is in the inside of casing 38, and do not have the inside of air/water heat exchanger at casing 38.In the embodiment of Figure 16, water/atmospheric exchanger 102 is in the outside of casing 38, and do not have the inside of air/water heat exchanger at casing 38.
Figure 17 to Figure 20 illustrates the different views of the optional additional casing 120 of electric pressure converter 10.Additional casing 120 can be used for holding the parts of electric pressure converter 10, and they are not positioned at housing 38 inside.For example, ACS 1000 series comprise in the option big selected works.Some options may need additional casing section 120 to be used to hold for example parts such as input and output isolator (disconnector), the connection of braking chopper (braking chopper), parallel-connected induction motors or bypass.Additional casing 120 can be positioned at a side of the housing 38 of electric pressure converter 10.Additional casing 120 comprises that riveted joint reaches the wall 122 and the hinged Qianmen 124 of folding metallic plate.The grid (MNS profile) that the inside of additional casing 120 can be according to the needs of variety of option, be used for installing flexibly the fixing hole 126 of transverse axis (beam) and folded sheet metal retaining element is equipped with.Additional casing section 120 can be separated with electric pressure converter 10 or ACS 100 casings 38 and transported.
Figure 17 illustrate have power apparatus 128, the additional casing 120 of optional output isolating switch 128 particularly.
Figure 18 illustrates the additional casing 120 with two isolators 130.
Figure 19 and Figure 20 illustrate the example of additional casing 120, and wherein Qianmen and wall part are removed, and make that the grid of structure, transverse axis and fixing hole 126 of framework 132 is visible.The grid that is used for the fixing hole 126 of flexible installing component 128,130 is positioned at four vertical edges of additional casing 120.
Figure 21 schematically illustrates the electric pressure converter 10 with no fuse design.Electric pressure converter 10 can be an ACS 1000MV variable frequency driver.Similar to the embodiment of Fig. 1, electric pressure converter 10 comprises rectifier 30, DC link 34, inverter 32 and output sinusoidal filter 36.Rectifier 12 is connected with transducer input transformer 29, and transducer input transformer 29 is via main power feed circuit breaker and therefrom potential source 22 power supplies of protective device 26.At opposite side, during being connected to, electric pressure converter 10 and particularly sinusoidal output filter 36 press AC motor 24.
Figure 22 and Figure 23 illustrate the controller 150 of electric pressure converter 10.Among Figure 23, schematically illustrate the indoor design of controller 150.Figure 24 illustrates the 3-D view of the housing of controller 150.For example, ACS 1000 can be equipped with IOEC plate 150 (input and output electronic cards).For example, the control electronic device 70 in the controller section can comprise this class plate 150.Specifically, ACS 1000 can comprise this card 150 between 2 to 6 alternatively, and they are used to contain all needs to digital input and output signal and analog input and output signal.
Show that in Figure 22 each plate comprises power supply 152, be used for to control logic 154 supply electric power.
As seen from Figure 23, plate 150 can insert the controller section 16 of electric pressure converter 10 simply.
Though describe in detail in accompanying drawing and above description and described the utility model, this explanation and description are considered to illustrative or exemplary rather than restrictive; The utility model is not limited to the disclosed embodiments.By research accompanying drawing, disclosure and the accompanying claims book, other change of the disclosed embodiments be it will be appreciated by those skilled in the art that and realizes, and implement claimed the utility model.In claims, word " comprises " does not get rid of other element or step, and indefinite article " " is not got rid of a plurality of.The function of some described in claims can be finished in single processor or controller or other unit.The fact of some measurement of record does not represent that the combination of these measurements can not be used to produce good result in mutually different dependent claims.Any reference number in claims not should be understood to the limiting protecting scope.
Claims (10)
1. an electric pressure converter (10) is characterized in that, described electric pressure converter (10) comprising:
Rectifier section (12) is used for an AC voltage transitions is become dc voltage,
Inverter section (14) is used for converting described dc voltage to the 2nd AC voltage,
Cooling section (18) is used for cooling off at least described rectifier section and described inverter section, and
Housing (38) is used to hold described rectifier section, described inverter section and described cooling section.
2. electric pressure converter as claimed in claim 1 (10),
It is characterized in that described cooling section (18) comprises fan (54), be used to produce the fan (54) of the gas stream that cools off described rectifier section and described inverter section at least.
3. electric pressure converter as claimed in claim 2 (10),
It is characterized in that, fan (54) be positioned at described enclosure interior and between the parts of the parts of described inverter section (14) and described rectifier section (12) to be used to reduce noise.
4. electric pressure converter as claimed in claim 2 (10),
It is characterized in that described electric pressure converter comprises the have pneumatic filter air intake (62) of (64), described filter (64) is adapted at described electric pressure converter to be changed from described electric pressure converter outside when operating.
5. electric pressure converter as claimed in claim 4 (10),
It is characterized in that switch element (58) is located immediately at the back of described air intake (62).
6. electric pressure converter as claimed in claim 1 (10),
It is characterized in that described cooling section (18) comprises gas cooled loop (94b) and liquid cooling loops (94a).
7. electric pressure converter as claimed in claim 1,
It is characterized in that described inverter section (14) comprises a plurality of switch elements (58),
It is characterized in that described switch element (58) is electrically connected to the low inductance busbar at the back side that is positioned at described electric pressure converter and arranges.
8. electric pressure converter as claimed in claim 7 (10),
It is characterized in that described switch element (58) has a public clamp circuit that is used for its positive and negative half period.
9. electric pressure converter as claimed in claim 1 (10),
It is characterized in that described rectifier section (12) and/or described inverter section (14) comprise door (44,46,48),
Described electric pressure converter (10) comprises earthed switch,
Described earthed switch and (44,46, the 48) mechanical interlock of described door make described earthed switch closure when described door is opened.
10. electric pressure converter as claimed in claim 1 (10),
It is characterized in that described electric pressure converter comprises the input isolating switch with the earthed switch combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206291845U CN202076940U (en) | 2010-11-16 | 2010-11-16 | Medium voltage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206291845U CN202076940U (en) | 2010-11-16 | 2010-11-16 | Medium voltage converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076940U true CN202076940U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206291845U Expired - Lifetime CN202076940U (en) | 2010-11-16 | 2010-11-16 | Medium voltage converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10291145B2 (en) | 2016-12-14 | 2019-05-14 | Caterpillar Inc. | Inverter assembly for electric power system |
-
2010
- 2010-11-16 CN CN2010206291845U patent/CN202076940U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10291145B2 (en) | 2016-12-14 | 2019-05-14 | Caterpillar Inc. | Inverter assembly for electric power system |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180612 Address after: Baden, Switzerland Patentee after: ABB TECHNOLOGY LTD. Address before: Zurich Patentee before: ABB T & D Technology Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |